热解吸自动进样器-气相色谱法测定工作场所空气中溶剂汽油  

Determination of Solvent Gasoline in Workplace Air by Thermal Tesorption-gas Chromatography

作　　者：郭尧平 郭冠浩[1] 苏艺伟 刘移民[1] GUO Yao-ping;GUO Guan-hao;SU Yi-wei;LIU Yi-min(Guangzhou Prevention and Treatment Hospital of Occupation Diseases,Guangdong Guangzhou 510620, China)

机构地区：[1]广州市职业病防治院

出　　处：《广州化工》2019年第17期132-134,共3页GuangZhou Chemical Industry

基　　金：广州市医学重点学科建设项目(穗卫科教[2016]27号);广州市高水平临床重点专科和培育专科建设项目(穗卫函[2019]1555号)

摘　　要：建立工作场所空气中溶剂汽油基于热解吸自动进样器的热解吸一气相色谱测定方法。空气样品采用Tenax TA吸附管采集,热解吸自动进样器解吸进样,毛细管色谱柱分离,采用火焰离子化检测器检测。实验结果显示,正己烷质量浓度在5. 30~26. 40 mg/管呈良好线性关系,相关系数为0. 9997,检出限为0. 9 ng/管,最低定量浓度为0. 6 mg/m^3(以采集1. 5 L空气计);加标回收率为96. 6%~104. 7%,方法精密度为4. 06%~4. 42%。本方法操作简单,灵敏度高,精密度好,可以自动进样方式处理样品,适用于无人值守检测工作场所空气中溶剂汽油。A method for Determination of Solvent gasoline based on thermal desorption-gas chromatography was established. The air samples were collected by Tenax TA adsorbent tube,desorbed with auto thermal desorber,separated by capillary column and detected by flame ionization detector. The results showed that the linearity range of n-hexane concentration was 5. 30 ~ 26. 40 mg/tube,the correlation was 0. 9997,the minimum detection limit and the minimum quantitative concentration of solvent gasoline were 0. 9 ng/tube and 0. 6 μg/m^3( 1. 5 L air collection),the relative standard deviation was 4. 06%~ 4. 42%,respectively. The average desorption efficiency was 96. 6%~ 104. 7%. The methodology had features of simple operation,high accuracy and good precision,could handle samples by automation injection,which was suitable for unattended analysis of solvent gasoline in workplace air.

关 键 词：工作场所 溶剂汽油 热解吸自动进样器 气相色谱法 

分 类 号：R134.4[医药卫生—劳动卫生]